上一文中,我们实现了首页的数据展示,本文讲解商品分类的商品展示,实现分页显示功能。
点击商品分类中的各种分类,向服务器发送请求,获取数据库中对应该分类的所有商品并以分页的形式返回显示。
当点击商品分类中的某一项分类时,head.html头部页面中触发超链接点击事件,向服务器发送商品分类id
在urls.py文件中定义获取该请求的地址
path('goods_list/',views.goods_list),
在views.py文件中定义goods_list函数,获取用户指定的分类id的商品信息,并进行分页处理
- # 处理商品列表的请求
- def goods_list(request):
- # 读取分类id
- try:
- typeId = request.GET["typeid"]
- request.session["typeId"]=typeId
- except:
- typeId = 0
- # 读取分页页码
- try:
- ym=request.GET["ym"]
- except:
- ym=1
-
- if int(typeId) == 0:
- t={"id":0,"name":"全部系列"}
- # 根据分类id查询该分类的所有商品信息
- if int(typeId)>0:
- # 根据分类id获取分类信息
- t = Type.objects.get(id=typeId)
- goods = Goods.objects.filter(type_id=typeId)
- else:
- # 分类id为0,说明查询所有商品
- goods=Goods.objects.all()
- # 将该分类的商品信息进行分页处理,每页显示8条记录
- pag=paginator.Paginator(goods,8)
- # 根据当前页码获取当前分页信息
- pageInfo=pag.get_page(ym)
- # 获取当前页的商品列表信息
- goodsList=pageInfo.object_list
- # 获取总页码数
- yms=pag.page_range
-
- return render(request,"goods_list.html",{"typeList":types,"t":t,"goodsList":goodsList,"page":pageInfo,"yms":yms})
最后将查询的该分类的商品数据发送给goods_list.html商品列表页面显示
- html>
- <html>
- <head>
- <title>商品列表title>
- {% load static %}
- <meta name="viewport" content="width=device-width, initial-scale=1">
- <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
- <link type="text/css" rel="stylesheet" href="{% static 'css/bootstrap.css' %}">
- <link type="text/css" rel="stylesheet" href="{% static 'css/style.css' %}">
- <script type="text/javascript" src="{% static 'js/jquery.min.js' %}">script>
- <script type="text/javascript" src="{% static 'js/bootstrap.min.js' %}">script>
- <script type="text/javascript" src="{% static 'layer/layer.js' %}">script>
- <script type="text/javascript" src="{% static 'js/cart.js' %}">script>
- <style>
- #nav{
- width: 100%;
- height: 40px;
- margin-top: 20px;
- clear: left;
- }
- #nav a{
- text-decoration: none;
- margin: 3px;
- background-color: cadetblue;
- }
- #nav a:hover{
- background-color: #FF1719;
- }
-
- #nav a.c_page{
- background-color: #FF1719;
- }
- #nav a.up_page,#nav a.do_page{
- width: 70px;
- height: 30px;
- padding: 5px 10px;
- border-radius: 5px;
- color: white;
- display: inline-block;
- }
- #nav a.p_page{
- width: 30px;
- height: 30px;
- padding: 5px;
- border-radius: 5px;
- color: white;
- display: inline-block;
- }
- style>
- <script>
- //定义方法,用于处理分页导航栏的样式
- function a_style() {
- //通过class选择器获得分页导航栏对象
- var aElements=document.getElementsByClassName("p_page");
- for (var i = 0; i < aElements.length; i++) {
- var text=aElements.item(i).innerHTML;
- if (text<10){
- aElements.item(i).innerHTML=" "+text+" ";
- }
- }
- }
- script>
- head>
- <body>
-
- {% include "header.html" with flag=2 typeList=typeList islogin=islogin %}
-
- <div class="products">
- <div class="container">
- <h2>
- {% if t %}
- {{t.name}}
- {% else %}
- 全部系列
- {% endif %}
- h2>
-
- <div class="col-md-12 product-model-sec">
- {% for g in goodsList %}
- <div class="product-grid">
- <a href="/goods_detail/?id={{ g.id }}">
- <div class="more-product"><span> span>div>
- <div class="product-img b-link-stripe b-animate-go thickbox">
- <img src="{% static g.cover %}" class="img-responsive" alt="{{ g.name }}" width="240" height="240">
- <div class="b-wrapper">
- <h4 class="b-animate b-from-left b-delay03">
- <button href="/goods_detail/?id={{ g.id }}">查看详情button>
- h4>
- div>
- div>
- a>
- <div class="product-info simpleCart_shelfItem">
- <div class="product-info-cust prt_name">
- <h4>{{ g.name }}h4>
- <span class="item_price">¥ {{ g.price }}span>
- <a href="/goods_buy/?id={{ g.id }}&url=list">
- <input type="button" class="item_add items" value="加入购物车" >
- a>
-
- <div class="clearfix"> div>
- div>
- div>
- div>
- {% endfor %}
-
- div>
-
-
- <div id="nav" align="center">
-
-
- {% if page.has_previous %}
- <a href="/goods_list/?ym={{ page.previous_page_number }}&typeid={{ t.id }}" class="up_page">上一页a>
- {% endif %}
-
- {% for ym in yms %}
- {% if page.number == ym %}
- <a href="/goods_list/?ym={{ ym }}&typeid={{ t.id }}" class="p_page c_page">{{ ym }}a>
- {% else %}
- <a href="/goods_list/?ym={{ ym }}&typeid={{ t.id }}" class="p_page">{{ ym }}a>
- {% endif %}
- {% endfor %}
-
-
- {% if page.has_next %}
- <a href="/goods_list/?ym={{ page.next_page_number }}&typeid={{ t.id }}" class="do_page">下一页a>
- {% endif %}
- div>
-
- div>
- div>
- div>
-
- {% include "footer.html" %}
-
- body>
- html>